1. Use the algorithm for curve sketching to sketch the following: a. y = x - 9x2 + 15x + 30 b. f(x) = -4x3 + 18.x2 + 3 C. y = 3+ 1 (x + 2)2 d. f(x) = x4 - 4x3 - &x2 + 48x 2x e. y= 1 x2 - 25 f. y= V2 1 g. y= 6x2 - 2 h. $ = 50 i. y= x+3 j. y= x2 - 3.x + 6 x2 - 4 x - 1 k. c = te-+5 1. y = x(Inx)3